Question

Read the following statements about the reproductive cycles in mammals and select the correct ones.
(i) Oestrous cycle occurs in primate mammals.
(ii) In species with oestrous cycle, females are generally sexually active during oestrous phase.
(iii) Both the cycles show monthly recurrence.

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (ii) only
• D. (i), (ii) and (iii)

Answer 1

The correct option is C (ii) only

Oestrous cycle occurs in non-primates such as cows, dogs, etc. Menstrual cycle occurs in primates only. Menstrual cycle shows monthly recurrence but oestrous cycle does not.

So, the correct answer is option C.